Electron Microscopy of Bacteria and Viruses

Enumeration and biomass estimation of planktonic bacteria and viruses by transmission electron microscopy.

Bacteria and virus particles were harvested from water samples by ultracentrifugation directly onto Formvar-coated electron microscopy grids and counted in a transmission electron microscope. With this technique, we have counted and sized bacteria and viruses in marine water samples and during laboratory incubations. By X-ray microanalysis, we could determine the elemental composition and dry-m...

Electron Microscopy of Salivary Gland Viruses

A human and a mouse strain of the salivary gland virus have been examined by electron microscopy. The human strain was transmitted, prior to examination, to tissue cultures derived from human myometrial cells, while the mouse strain was examined in mice inoculated intraperitoneally. The nuclear forms associated with both strains of virus were morphologically similar. Nuclear inclusions, compose...

Electron Microscopy of Fowl Pox Virus

Electron Microscopy of Ultrathin Sections of Bacteria

Ten years have passed since Baker and Pease (1949) published the first electron micrograph of an ultrathin section of a bacterial cell. During this time, more than thirty papers have appeared which have been devoted to the elucidation of the fine structure of the bacterial cell. Due to technical difficulties, to individual differences among species, and to the fact that some authors have limite...

Isolation of Herpetosiphon giganteus and Ultrastructure Analysis by Electron Microscopy

Herpetosiphon giganteus is a filamentous gliding bacterium. Gliding motility is the movement of the cells over surfaces without the aid of flagella. The mechanism responsible for bacterial gliding motility has not been known and there are only a few data on Herpetosiphon giganteus. The aim of this study was to observe the ultrastructure and negative staining of isolated strains of Herpetosiphon...